CN101944791A - The method and apparatus of generator amature bearing precompressed - Google Patents
The method and apparatus of generator amature bearing precompressed Download PDFInfo
- Publication number
- CN101944791A CN101944791A CN2010102264294A CN201010226429A CN101944791A CN 101944791 A CN101944791 A CN 101944791A CN 2010102264294 A CN2010102264294 A CN 2010102264294A CN 201010226429 A CN201010226429 A CN 201010226429A CN 101944791 A CN101944791 A CN 101944791A
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- China
- Prior art keywords
- spring
- guide member
- external diameter
- generator
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
Abstract
By placing spring in the space in shell, generator has the length of shortening.This shell comprises by the shaft-driven output shaft of input, and the yoke that is used to separate two axles.Assemble generator by placing spring in the space in having the shell of first.This space also has yoke.Rotor bearing is positioned in the space of adjacent springs and conflicts on spring.The second portion of shell is attached on the first part of case shell, thereby spring is therein by precompressed.Generator also adopts the guide member that is used to keep spring.Generator also has the power that is used for spring and is applied to thrust collar on the rotor bearing.
Description
Background technology
If generator breaks down, some generators comprise employed those generators of commercial aircraft, deliberately are required to disconnect with the power that transmits from gearbox or other Poewr transmission mechanisms.Disconnecting generator is a kind of safety precaution, reducing the possibility that bad generator will damage gearbox or engine, and further minimizing to the damage of generator.Some generator uses the yoke (yoke) with slope so that generator and gearbox are disconnected effectively.Yoke needs axial space so that gear shaft and generator shaft are disconnected.
Modern frequency conversion aircraft generator uses the angular contact bearing of axial precompressed usually, to improve the critical speed of generator.Traditionally, this pre-compressed spring is a kind of wavy spring that is placed on the interior crest of generator casing to crest (crest-to-crest).
The weight that reduces airplane parts is airplane parts designer's common target with the efficient that increases aircraft.
Summary of the invention
According to the present invention, by placing spring in the space in shell, generator has the length that is shortened, and in this space, yoke operation is separating output shaft with power shaft, thus the length and the weight of minimizing generator.
According to the present invention, a kind of method of assembling generator is included in and places spring in the space in the shell with first.This space also has yoke within it.The rotor bearing adjacent springs is placed and is conflicted on spring.Then, the second portion of shell is attached on the first part of case shell, thereby spring is pressed in the space in advance.
According to one embodiment of the present invention, aircraft generator uses the spring guide member in order to keep spring.The spring guide member has cylindrical body, and this cylindrical body has external diameter, so that the ratio of the external diameter of cylindrical body and the external diameter of spring is about 0.56.
According to another embodiment of the present invention, use the thrust collar on aircraft generator to have the flat, annular body, this flat, annular body has internal diameter and the external diameter that limits width, makes the ratio of width and external diameter of described body be about 0.16.
According to another embodiment of the present invention, the lining that is used for having therein the aircraft generator of a plurality of springs has ring body, this ring body has the external diameter of the internal diameter of 3.973 inches or 100.9 millimeters and 4.337 inches or 110.16 millimeters, and is arranged at a plurality of breach on the internal diameter.
According to another embodiment of the invention, the assembly that is used for having therein the aircraft generator of bearing has the spring guide member, be arranged on the spring around the described spring guide member, the lining of retainer spring guide member, and the thrust collar of adjacent springs and bearing.
Description of drawings
In conjunction with the detailed description of the following preferred implementation of reference under the situation of appended accompanying drawing reading, present invention will become more fully understood, and reference number same in the accompanying drawing refers to part same in the view all the time.Wherein:
Fig. 1 is the generalized section of the employing crest of prior art to the generator of the wavy spring of crest;
Fig. 2 is the perspective view of the crest of prior art to the wavy spring of crest;
Fig. 3 is the generalized section in conjunction with generator of the present invention;
Fig. 4 is the top perspective schematic diagram in conjunction with generator of the present invention; And
Fig. 5 is the side perspective view in conjunction with the part of generator of the present invention; And
Fig. 6 is the perspective diagram in conjunction with bearing insert of the present invention.
Embodiment
Referring now to Fig. 1, disclosed a kind of execution mode of the commercial aircraft generator 5 with shell 10 of prior art.Generator has power shaft 15, the rotary power that power shaft 15 receives from gearbox (not shown) or power source (not shown).Power shaft optionally is couple on the output shaft assembly 20, and output shaft assembly 20 comprises the interior axle 25 along with outer shaft 30 rotations.Interior axle 25 can optionally move axially in outer shaft, so that interior 25 is separated with power shaft 15.Outer shaft 30 support rotor balanced components 35.
Rotor balancing assembly 35 and output shaft 30 are supported by pair of bearings assembly 45.As known in present technique, wavy spring 50 (also seeing Fig. 2) is by pre-against bearing assembly, to improve the generator critical speed.Wavy spring is arranged in the shell 10 around power shaft 15.
Yoke 60 is placed on the far-end 65 of output shaft assembly 20 in the shell 10.Axle 25 in yoke is shifted to, and engage ramped surfaces 70 on it so that interior axle is moved axially away from power shaft, thus axle 25 is separated with power shaft 15 in making.May damage under the situation of generator at some, must the forbidding generator, damage gearbox or other power source (not shown)s or further damage generator avoiding.
The axial length of generator 5 comprises the width (see figure 2) of wavy spring 50.Wavy spring is arranged on the end of shell away from yoke 60.Yet, according to the present invention, eliminated wavy spring 50, and contiguous yoke places axle spring 150 (described in will be hereinafter), eliminating wavy spring, thereby and make the width of generator 5 reduce to minimum.
Referring now to Fig. 3-5, one embodiment of the present invention have been disclosed.Just as and prior art, shown generator 105 with shell 110.Generator has power shaft 115, the rotary power that power shaft 115 receives from gearbox (not shown) or power source (not shown).Power shaft optionally is couple on the output shaft assembly 120, and output shaft assembly 120 comprises the interior axle 125 along with outer shaft 130 rotations.Interior axle 125 can optionally move axially in outer shaft, so that interior 125 is separated with power shaft 115.Outer shaft 130 support rotor balanced components 135.
Flat, annular thrust collar 159 engages each spring and bearing assembly 145.Thrust collar has the external diameter of the internal diameter of 2.660 inches or 67.564 millimeters and 3.925 inches or 99.695 millimeters, and this defines the width of 0.6325 inch or 16.066 millimeters, thereby the ratio between the width of this thrust collar and the external diameter is 0.161.Thrust collar also has setting thereon and towards the outer rim 163 of bearing assembly 145.
As known in the present technique, bearing assembly 145 needs lubricated.Suppose the position of thrust collar described herein, the circulation between lubricating oil (not shown) and the bearing assembly may be hindered.Therefore, for avoiding any obstruction in the oil and the circulation of bearing assembly, thrust collar 159 has and is arranged on the wherein a plurality of holes 161 to allow oil to flow through.
Yoke 160 is arranged in the space 162 at near-end 165 places of shell 110 inherent output shaft assemblies 120.Axle 125 in yoke is shifted to, and engage ramped surfaces 170 on it so that interior axle is moved axially away from power shaft, thus axle 125 is separated with power shaft in making.May damage under the situation of generator at some, must forbid generator, to avoid damaging gearbox or other power source (not shown)s.
With reference to Fig. 4 and 6, space 162 has the bearing insert 175 that is arranged on wherein.Bearing insert has ring body, ring body has the external diameter of the internal diameter, 4.3372 inches of 3.735 inches or 94.869 millimeters or 110.165 millimeters and is in a plurality of sector notch 180 on the internal diameter, and sector notch 180 is used to settle the base 157 of each spring guide member 155.The space also holds an end 185 of the ramped surfaces 170 of axle 125 in the joint of yoke 160.Because hold 185 to be in the space 162, so can not place continuous spring therein.Each sector notch has the radius of 0.3175 inch or 8.064 millimeters, and comprises the arcs of 84.5 degree.The length of the thickness T of lining 175 and each spring guide member 156 is used to limit the compression of helical spring 150.
Referring now to Fig. 5, disclosed assembly of the present invention.First half 190 of shell 110 vertically is provided with.Each helical spring 150 is arranged on the spring guide member 155.Each spring guide member places the breach 180 on the bearing insert 175 in space 162.Thrust collar 159 is placed against each spring, and rotor balancing assembly 135 (see figure 3)s that will comprise output shaft assembly 120 are reduced on the spring in thrust collar and the space 162.Then, by bolt 200 with second half 195 (see figure 3) of shell be attached to shell first half 190 on.When fastening bolt, helical spring 150 is as required by pre-against bearing assembly 145.
Convert on the end of the contiguous yoke 160 that is in generator a plurality of helical springs 150 in untapped space 162 basically to by the wavy spring 50 away from an end of yoke 60 that will be in generator, the length of generator has reduced the width of wavy spring 50.Because yoke 160 protrudes in the space 162, thus wavy spring can not be used therein, and use spring as helical spring other types.
Above-mentioned introduction only is the demonstration of the principle of the invention.According to above instruction many modifications and variations is possible.Therefore, will be appreciated that within the scope of the appended claims, the mode except using the demonstration execution mode of clearly describing also can be implemented the present invention.For this reason, should study following claims, to determine true scope of the present invention and content.
Claims (25)
1. be used to make generator size to reduce to minimum equipment, described equipment comprises:
Shell;
Power shaft;
Output shaft, it is attached on the interior rotor of described shell, and is driven by described power shaft;
Yoke, it is used for described power shaft is separated from described output shaft;
Space in described shell, in described space, described yoke is optionally operated to separate described power shaft and described output shaft; And
Spring, it is arranged in the described space, and wherein, described spring can be by precompressed.
2. the described equipment of claim 1, wherein, described spring has axle, and described axle is arranged to parallel with the axle of described output shaft.
3. the described equipment of claim 2 also comprises:
Support, it is arranged in the described spring.
4. the described equipment of claim 3, wherein, described support has the height relevant with described spring, and therefore, the ratio between the length of the described spring after the installation and the length of described support is about 1.23.
5. the described equipment of claim 1 also comprises:
Thrust collar, it is used for controlling along described spring shaft the power of described spring.
6. the described equipment of claim 1 also comprises:
Guide member, it is used at the described spring in location, described space.
7. the described equipment of claim 1, wherein, described guide member is the breach in bearing insert.
8. be used to assemble the method for the generator with the length of minimizing, it comprises:
Place axle spring in the space in having the shell of first, described space has yoke therein;
Use the spring guide member to be positioned at the described spring in the described space;
Place thrust collar against spring;
Rotor bearing is inserted described space, thereby described rotor bearing is conflicted on described thrust collar; And
The second portion of described shell is attached in the described first, thereby described spring is therein by precompressed.
9. the described assembly method of claim 8 also comprises:
In described space, place before the described spring, described spring is positioned in the support.
10. the described method of claim 8, wherein, the described spring with drift of about 41.783mm is preloaded to the installation length of 33.147mm.
11. a guide member, it is used for the helical spring that uses at aircraft generator, and described guide member comprises:
Cylindrical body, described cylindrical body has external diameter, thus the ratio of the external diameter of the external diameter of described body and described spring is about 0.56.
12. the described guide member of claim 11, wherein, described guide member also comprises the cup dolly that is attached to described cylindrical body one end, and wherein, the ratio of the described external diameter of the diameter of base and cylindrical body is about 1.814.
13. a thrust collar, it is used for traffic load on the bearing of aircraft generator, and described thrust collar comprises:
The flat, annular body, it has internal diameter and the external diameter that limits width, thus the ratio of the width of described body and described external diameter is about 0.161
14. the described thrust collar of claim 13, wherein, described thrust collar has a plurality of holes that run through, and is used to allow lubricating fluid to flow through and has the described thrust collar of described bearing.
15. the described thrust collar of claim 13, wherein, described ring body has the edge that is provided with along its external diameter.
16. a lining is used for having therein the generator of a plurality of springs, it comprises:
Ring body, it has internal diameter and the about 4.334 inches external diameter of 94.869mm; And
Be arranged at the breach on the described internal diameter, wherein, described breach support spring.
17. the described lining of claim 16, wherein, each breach limits the arc of about 84.5 degree.
18. the described lining of claim 17, wherein, each breach limits the radius of about 8.064mm.
19. an assembly that is used for having therein the aircraft generator of bearing, it comprises:
The spring guide member;
Be arranged on described spring guide member spring on every side;
Locate the lining of described spring; And
The thrust collar of contiguous described spring and bearing.
20. the described assembly of claim 19, wherein, the length ratio of the installation length of described spring and described spring guide member is about 1.231 to 1.
21. the described assembly of claim 19, wherein, described thrust collar has the flat, annular body, and described ring body has internal diameter and the external diameter that limits width, thereby the ratio of the width of described body and described external diameter is about 0.161.
22. the described assembly of claim 19, wherein, described lining comprises ring body, and described ring body has a plurality of breach that are arranged on the described internal diameter.
23. the described assembly of claim 22, wherein, each breach limits the arc of about 84.5 degree.
24. the described assembly of claim 20, wherein, described spring guide member comprises:
Cylindrical body, described cylindrical body has external diameter, thus the ratio of the external diameter of the external diameter of described spring and described body is about 0.56.
25. the described assembly of claim 20, wherein, described guide member also comprises the cup dolly that is attached to described cylindrical body one end, and wherein, the ratio of the described external diameter of the diameter of base and cylindrical body is about 1.877.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/496,713 | 2009-07-02 | ||
| US12/496,713 US8102089B2 (en) | 2009-07-02 | 2009-07-02 | Generator rotor bearing preload method and apparatus |
| US12/496713 | 2009-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101944791A true CN101944791A (en) | 2011-01-12 |
| CN101944791B CN101944791B (en) | 2013-06-19 |
Family
ID=43412232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102264294A Active CN101944791B (en) | 2009-07-02 | 2010-07-02 | Generator rotor bearing preload method and apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US8102089B2 (en) |
| CN (1) | CN101944791B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531056A (en) * | 2013-09-11 | 2016-04-27 | 舍弗勒技术股份两合公司 | Linear actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8102089B2 (en) * | 2009-07-02 | 2012-01-24 | Hamilton Sundstrand Corporation | Generator rotor bearing preload method and apparatus |
| US9097281B2 (en) | 2012-08-03 | 2015-08-04 | Hamilton Sundstrand Corporation | Ball bearing particularly for use in high speed generator |
| US20140219598A1 (en) * | 2012-10-02 | 2014-08-07 | Andrew P. Grosskopf | Variable frequency generator input shaft bearing |
| US9574618B2 (en) * | 2014-11-20 | 2017-02-21 | Hamilton Sundstrand Corporation | Thermal disconnect assembly with flight control permanent magnet generator for integrated drive generator |
| EP3185403A1 (en) * | 2015-12-23 | 2017-06-28 | Siemens Aktiengesellschaft | Permanently excited synchronous machine with automatic rotor decoupling in winding short circuit |
| US11901799B2 (en) | 2021-02-08 | 2024-02-13 | General Electric Company | Electrical machines for integration into a propulsion engine |
| US11566533B2 (en) | 2021-02-08 | 2023-01-31 | General Electric Company | Electrical machines for integration into a propulsion engine |
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2012
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Also Published As
| Publication number | Publication date |
|---|---|
| US20120104908A1 (en) | 2012-05-03 |
| US8102089B2 (en) | 2012-01-24 |
| CN101944791B (en) | 2013-06-19 |
| US20110001375A1 (en) | 2011-01-06 |
| US8264111B2 (en) | 2012-09-11 |
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